AI agents call list_connections to retrieve information from Db Oauth without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves information about existing database connections in the current session. It has no side effects, does not execute queries, and does not create, modify, or delete data. It falls squarely into the Read category as a data retrieval operation. Severity is low because exposure of connection metadata poses minimal risk compared to actual data access or modification capabilities.
From the tool's definition Tool name is 'list_connections' and description states 'List the database connections available in the current session. Returns the' — this is a read-only operation that queries metadata about available connections without modifying state.
Attacks that exploit this kind of access
List the database connections available in the current session. Returns the. It is categorised as a Read tool in the Db Oauth MCP Server, which means it retrieves data without modifying state.
Register the Db Oauth MCP server in PolicyLayer and add a rule for list_connections: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Db Oauth. Nothing to install.
list_connections is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_connections rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for list_connections. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
list_connections is provided by the Db Oauth MCP server (kpconnell/db-oauth-mcp-node). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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